2016-03-26 00:47:20 +01:00
# statements, operators, and libaries
2016-04-02 01:22:47 +02:00
Statements, operators, and libraries.
2016-03-26 00:47:20 +01:00
### @parent js/language
TouchDevelop functions include statements and operators.
### Statements
TouchDevelop statements include:
* [break ](/microbit/js/break ), to exit a loop before it has completed, usually used in conjunction with an [if ](/microbit/reference/logic/if ) statement
* [if ](/microbit/reference/logic/if ) conditional statement
* [for ](/microbit/reference/loops/for ) and [while ](/microbit/js/while ) loops
* [function ](/microbit/js/function )
* [return ](/microbit/js/return )
* [var ](/microbit/reference/variables/var ) (local variable declaration)
### Operators
TouchDevelop operators include:
* [assignment operator ](/microbit/reference/variables/assign ) `:=` (to update variables)
* arithmetic operators (`+`, `-` , `*` , `/` , mod) operate on [Numbers ](/microbit/reference/types/number )
* comparison operators (such as `>` , `=` ) operate on [Numbers ](/microbit/reference/types/number )
* boolean operators (`not`, `or` , `and` ) operate on [Booleans ](/microbit/reference/types/boolean )
* concat operator combines [Strings ](/microbit/reference/types/string )
### Libraries
Libraries provide additional functions:
* the [micro:bit library ](/microbit/js/contents )
* the [math ](/microbit/js/math ) and [bits ](/microbit/js/bits ) libraries
### see also
[TouchDevelop Documentation ](/microbit/js/contents ), [comments ](/microbit/js/comment )
